Nut-lock.



No. 858,045. PATENTED JUNE 25, 1907. H. G. WERNER.

NUT LOCK. I 00000000000000000000000000 e.

ATTUR cient device for preventing the retraction of I HARRY c. WERNER, or WHEELING, WEST VIRGINIA.

NUT-LOCK.

To rtZ/Lufltom it may concern Be itknown that I, HARRY C. WERNER, a

citizen of the United States of America, and a resident of Wheeling, county of Ohio, and State of West Virginia, have invented certain new and useful Improvements in Nut Locks, of which the following is a specification. I

My invention relates to new and useful improvements in nut-locks, and it has for its object to provide a simple, cheap and effinuts on their bolts.

A further'object of the invention is to provide a nut-lock which iseflicient for reventing the nut from working off the olt and which admits of the convenient removal of the nut when'occasion requires.

In describing the invention in detail, refer.

ence is herein had to the accompanying drawings, forming a part ofthis specification, in whichb Figure 1 is a side elevation of a bolt to which the invention is applied; Fig. 2 is a longitudinal section of the same; Fig. 3 is an outer end view of the bearing-nut; and in Fig. 4 is respectively illustrated a side view, a rear edge vlew, and a front edge view of the key.

Referring to said drawlngs, in which like reference numerals designate like parts throughout the several views- 1 indicates a screw-bolt, 2 a bearing-nut adapted for engagement with a bearin wall.

from which the threaded end of said b0 tpro- 'jects, and 3 a follower, or jam-nut. In the outer face, or end, of the bearing-nut 2} at one side ofthe central threaded aperture 4; therethrough and in open communication with said aperture is an 1nwardly-inclined recess 5, the rear wall 6 of which is inwardly inclined, as shown. Loosely seated in said recess 5 is a key .7, preferably of, hardened steel, consisting of a body-portion 8, substantially rectan ular in cross-section, and an integral we( ge-portion 9 adapted for fitting in said recess 5 and having an inclined rear wall 10 in engagement with the inclined wall 6 of the recess. The front edge of the wedge-portion 9 is beveled longitudinally to an edge 11 which is ada ted to sink into the threads of the bolt 1 when the key is subjected to inward pressure. The body-portion 8 0f the key 7 stands outside the recess 5 and has its outer end beveled to a forwardly-directed edge 12, said edge being substantially radial to the bolt 1.

Specification of Letters Patent.

' Application filed October 5,1906- seria1No.,s37,53s.

Patented June 25,- 1907.

When the jam-nut 3 is screwed up behind the bearing-nut 2, the front face thereof slides over said forwardly-directed beveled edge 12, forcing the key 7' inward in. the recess and causing the beveled edge 11 to cut into the threads of the bolt. I

The recess 5 is larger in width than the key which fits therein, hence, when the jamnut in turning forward engagesthe outer beveled end 12 of the key, it causes thelatter to leanover in a forwardly-inclined position. The forwardly-directed edge 12 cuts into the face of the jam-nut 3 when the latter begins to 1' 1" tract, thus holding it firmly in place.

When it is desired to remove the nuts 2 and 3 from the bolt, a chisel or like edge-tool is inserted in the angle formed Ibythe jam-nut 3 and the beveled edge 12 of the key; then,

upon striking said tool a sharp blow, the key will be further s rung inward in said'recess, disengaging sai jam-nut therefrom. Upon the removal 'of the jamnut', the key may be easily removed after striking it lightly on its opposite sides to loosen its hold on, the t ireads of the bolt.

Having thus describedmy invention, what I claim as new, and desire to secure by Letters Patent, is

1. In 'a nut-lock, the combination with a screw-bolt, of a bearing-nut having an inwardly-inclined recess therein at one side of the central threaded aperture thereof and in open communication with said aperture, a tapered key seated in said recess, said key having a longitudinally beveled inner edge adapted to cut into the threads ofthe bolt upon the application of pressure to the outer end of the key, and having a beveled end projecting outwardly' from said recess, said beveled end being adapted to be engaged by with its outer end projecting therefrom andhaving a beveled edge disposed in opposing relation to the threads of the bolt, said pro jecting outer end of the key being forwardly beveled to admit of a j am-nut slidingthereover in a forward direction exerting a wedg- "a jam-nut screwed upon said boltand to cut IOO ing pressure on said-keyand adapted for in- I nut.

terlocking engagement with said j am-nut when the latter is screwed up firmly theretherefrom, said key having a tapered inner end and having a beveled edge ln'opposing relation to the threads of the bolt, the outer end of said key having a forwardly beveled edge over which a jam-nut is adapted to slide in a forward direction to Wedge said key in said recess and adapted to bite into and prevent the retraction of said jam-nut.

4. In a nut-lock, the combination with a screw-bolt, of a bearing-nut having a recess therein, said recess being directed inwardly from the outer face of said nut and having its rear wall inwardly inclined, a key seated in said recess with its outer end projecting therefrom, said key being of less width than said recess and adapted to lie in a forwardly inclined position therein the inner edge of said 'key being beveled and disposed in opposing relation to the threads of the bolt, and the outer end of said key being provided with a bevel against which the pressure of a jamnut screwed up therebehind is applied to drive said key inward, said bevel being adapted to bite into said am-nutto prevent the retraction thereof.

In testimony whereof I affix my signature in presence of two subscribing witnesses.

HARRY C. WERNER.

Witnesses:

H. E. DUNLAP, R. F. DILWORTH. 

